Thus, there was little idea why you all the cars from scratch to install and spend lots of time on this? I'm in the game to replace almost all machines, and the game works perfectly, not throwing out so you do not bathe on adding, we decided to put the file responsible for the car in GTA 4. In general, we go in the game folder \ Grand Theft Auto IV \ pc \ models \ cdimages and copied into a separate folder, file your vehicles, then download from deposit my file and replaces it with yours, go in the game and check. If all is well then then what machine you do not like you can easily replace it. It is much easier for me as ... If that write in comments.